“露”和“霜”都是水家族中的一员,是一对好姐妹。姐姐“露”长得晶莹剔透,婀娜多姿;妹妹“霜”长得冰清玉洁,洁白无瑕。姐妹俩相约来到了小学科学课,可同学们对她俩既熟悉又陌生。熟悉是因为她俩的大名早已如雷贯耳:陌生是因为同学们对她们的身世不够清楚。 “Dew ” and “Frost ” are members of the water family, is a pair of good sisters. Sister “dew ” looks crystal clear, graceful; sister “frost ” looks ice and jade, white and flawless. Sisters came to elementary school science class, but students are both familiar and unfamiliar to her. Familiar with her because of their name has long been known: strange because students are not clear enough about their life experience.